/* ***样式重置*** */
* {
  margin: 0;
  padding: 0;
}
a {
  text-decoration: none;
}
ul {
  /* 去掉列表的标识符 */
  list-style: none;
}
.clearfix::after {
  /* 清除浮动 */
  content: '';
  display: block;
  height: 0;
  clear: both;
}
/* 当前项目的公有样式 */
.b-center {
  width: 1100px;
  margin: auto;
}
.s-center {
  width: 800px;
  margin: auto;
}

/* nav导航栏部分 */
.nav {
  height: 70px;
  background-color: #3c434a;
  color: #fff;
  line-height: 70px;
  user-select: none;
}
.nav > div {
  display: flex;
  /* 两端对齐 */
  justify-content: space-between;
}
/* 导航里面右侧列表 */
.nav ul li {
  float: left;
  margin-left: 36px;
}
.nav ul li a {
  color: #fff;
}

/* banner轮播图部分 */
.banner {
  background-color: #2e363e;
  color: #fff;
}
.banner .pic {
  height: 370px;
  position: relative;
}
.banner .pic ul {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  width: 148px;
  display: flex;
  justify-content: space-between;
}
.banner .pic ul li {
  width: 28px;
  height: 6px;
  background-color: #a8a8a8;
}
.banner .pic h1 {
  text-align: center;
  line-height: 370px;
}
/* classic经典案例部分 */
.classic {
  background-color: #dfe4e7;
}
.classic .up {
  height: 60px;
  border-bottom: 1px solid #aaafb3;
  line-height: 60px;
}
.classic .down {
  line-height: 60px;
}
.classic .down {
  padding-bottom: 80px;
}
.classic .down h4 {
  line-height: 56px;
}
.classic .down ul {
  display: flex;
  justify-content: space-between;
}
.classic .down ul li {
  width: 192px;
  height: 246px;
  background-color: #a9aeb2;
}
/* newscenter经典案例部分 */
.newscenter {
  background-color: #dfe4e7;
}
.newscenter .b-center {
  background-color: #3e4349;
}
.newscenter .up {
  height: 60px;
  border-bottom: 1px solid #aaafb3;
  line-height: 60px;
}
.newscenter .up h3 {
  color: #fff;
}
.newscenter .down {
  line-height: 60px;
}
.newscenter .down {
  padding-bottom: 80px;
}
.newscenter .down h2 {
  color: #fff;
  line-height: 56px;
}
.newscenter .down .s-center div {
  display: flex;

  justify-content: space-between;
}
.newscenter .down .s-center div ul {
  display: flex;
}
.newscenter .down .s-center ul:last-child {
  display: block;
}
.newscenter .down .s-center ul:first-child li {
  width: 390px;
  height: 246px;
  background-color: #a9aeb2;
}
.newscenter .down .s-center ul:last-child li {
  width: 390px;
  height: 74px;
  border-bottom: 12px solid #3e4349;
  background-color: #656c74;
  justify-content: space-around;
}
.newscenter .down .s-center div:first-child ul:last-child li:last-child {
  /* 最后一个块不要下边框 */
  border-bottom-width: 0;
}
.newscenter .down .s-center .xinshanggao {
  display: block;
}
.newscenter .down .s-center .xinshanggao span {
  color: #d5dadd;
  border-bottom: 1px solid #a9aeb2;
  line-height: 40px;
}
/* course发展历程部分 */
.course {
  background-color: #dfe4e7;
}
.course .up {
  height: 60px;
  border-bottom: 1px solid #aaafb3;
  line-height: 60px;
  text-align: center;
}
.course .down {
  line-height: 60px;
}
.course .down {
  padding-bottom: 80px;
}
.course .down h4 {
  line-height: 56px;
  text-align: center;
}
.course .down ul {
  display: flex;
  justify-content: space-between;
}
.course .down ul li {
  margin-top: 10px;
  display: flex;
  width: 395px;
  height: 100px;
  justify-content: space-between;
}
.course .down .s-center ul li div:first-child {
  width: 80px;
  height: 80px;
  background-color: #656c74;
  margin: 10px;
}
.course .down .s-center ul li div:last-child {
  width: 300px;
  color: #424344;
}
.course .down .s-center ul li div:last-child p:first-child {
  line-height: 20px;
  font-size: 16px;
  margin-top: 10px;
  margin-bottom: 5px;
}
.course .down .s-center ul li div:last-child p:last-child {
  line-height: 18px;
  font-size: 12px;
  margin-right: 5px;
}
/* procuctin产品介绍部分 */
.procuctin {
  background-color: #3e4349;
}
.procuctin .up {
  color: white;
  height: 60px;
  border-bottom: 1px solid #aaafb3;
  line-height: 60px;
  text-align: center;
}
.procuctin .down {
  line-height: 60px;
}
.procuctin .down {
  padding-bottom: 60px;
}
.procuctin .down h4 {
  color: white;
  line-height: 56px;
  text-align: center;
}
.introduction {
  width: 750px;
  height: 250px;
  margin-left: 25px;
  background-color: #898e92;
}
.fuwu {
  width: 400px;
  margin-left: 200px;
  display: flex;
  justify-content: space-around;
}
.fuwu span {
  width: 125px;
  height: 30px;
  line-height: 30px;
  text-align: center;
  margin-top: 30px;
  color: #fff;
  justify-content: space-between;
  background-color: #656c74;
}
.fuwu span:hover {
  background-color: #a9aeb2;
}
/* zone合作专区部分 */
.zone {
  background-color: #e1e5e8;
}
.zone .up {
  height: 60px;
  border-bottom: 1px solid #aaafb3;
  line-height: 60px;
  text-align: center;
}
.zone .down {
  line-height: 60px;
}
.zone .down {
  padding-bottom: 60px;
}
.zone .down h4 {
  line-height: 56px;
  text-align: center;
}
.zone .down .s-center div {
  display: flex;
  justify-content: space-between;
}
.zone .down .s-center div > div {
  background-color: #f4f5f7;
  height: 180px;
  width: 255px;
}
/* footer部分 */
.footer {
  background-color: #303539;
  color: #fff;
}
.footer .s-center > div {
  padding-top: 50px;
  padding-bottom: 50px;
  display: flex;
  justify-content: space-between;
}
.footer .s-center .l1 {
  display: flex;
}
.footer .s-center .l1 ul {
  line-height: 20px;
  margin-left: 10px;
}

.footer .s-center img {
  line-height: 80px;
  width: 80px;
  height: 80px;
}
.footer .s-center div > div > ul > li.cur {
  margin-bottom: 5px;
  font-size: 14px;
}
.footer .s-center div > div > ul > li {
  font-size: 13px;
}
/* footnav底部导航栏部分 */
.footnav {
  height: 50px;
  background-color: #3c434a;
  color: #fff;
  line-height: 50px;
  user-select: none;
}
.footnav > div {
  display: flex;
  /* 两端对齐 */
  justify-content: space-between;
}
/* 导航里面左侧列表 */
.footnav ul li {
  float: left;
  margin-right: 25px;
}
.footnav ul li a {
  color: #fff;
}
.footnav .s-center div span {
  padding: 18px 20px 12px 20px;
  background-color: #565d65;
}
.footnav .s-center div span:hover {
  background-color: #a9aeb2;
}

/* 固定浮动导航栏 */
.fixed {
  width: 48px;
  border: 5px solid #2e363a;
  position: fixed;
  top: 400px;
  right: 15%;
}
.fixed div {
  line-height: 48px;
  text-align: center;
  border-bottom: 3px solid #2e363a;
  background-color: #656c74;
  color: #fff;
}
.fixed div:hover {
  background-color: #a6aeb2;
}
.fixed div:last-child {
  /* 最后一个块不要下边框 */
  border-bottom-width: 0;
}
